Topographic micro scale and in-depth nano scale level modifications of polymeric materials
play an important role in engineering their physical and chemical properties. Polyethylene …

Positron annihilation lifetime spectroscopy (PALS) and atomic force microscopy (AFM)
analyses were adopted for in-depth (at the nanoscale level) and surface (at the microscale …

The effects of swift heavy ions and gamma radiations upon the nano-scale free volume of
the polymethylemethacrylate (PMMA) polymer were investigated using positron annihilation …

Radiation exposure modifies the nano scale free volume of the polymers which has direct
correlation to certain properties of polymeric materials. CR-39 (DOP) polycarbonate …

The effects of low (1.0, 3.0 keV) and high (1.0 MeV) energy reactive oxygen ion beam
irradiation on surface nano-morphology and chemical state of the constituent elements in …

Low-density polyethylene (LDPE) was irradiated with 4MeV protons at different ion fluences.
Chemical modifications were studied by UV–vis and Fourier transformed infrared (FT-IR) …

This study's goal was to describe the influence of a wide range of ionizing beta radiation
upon the changes in surface layer mechanical properties and structural modifications of …

A systematic study on the dependence of the free volume at nanoscale in carbon ions
irradiated polymethylmethacrylate polymer samples was carried out by means of positron …

Polymer structures have been investigated using positron annihilation lifetime spectroscopy
(PALS) with a slow positron beam as well as a conventional radioactive source (22Na). The …

The location and size of nanoscale free-volume holes (nanoholes) in graft-type polymer
electrolyte membranes (PEMs), which were prepared by radiation-induced graft …